478  
CDUS43 KLOT 210636  
CLIRFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1236 AM CST TUE NOV 21 2017  
 
   
...............................
 
 
   
..THE ROCKFORD IL CLIMATE SUMMARY FOR NOVEMBER 20 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1905 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 55 307 PM 69 1942 45 10 36  
MINIMUM 27 321 AM 5 1914 28 -1 20  
AVERAGE 41 37 4 28  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.85 1983 0.08 -0.08 0.00  
1907  
MONTH TO DATE 1.03 1.75 -0.72 0.68  
SINCE SEP 1 7.39 7.77 -0.38 5.37  
SINCE JAN 1 44.18 33.43 10.75 31.29  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.9 2015 0.1 -0.1 0.0  
MONTH TO DATE 0.2 0.5 -0.3 T  
SINCE SEP 1 0.2 0.6 -0.4 T  
SINCE JUL 1 0.2 0.6 -0.4 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 28 -4 37  
MONTH TO DATE 569 470 99 308  
SINCE SEP 1 952 1009 -57 605  
SINCE JUL 1 959 1023 -64 605  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 4  
SINCE SEP 1 144 93 51 186  
SINCE JAN 1 828 820 8 1103    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 13.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 81 300 AM  
LOWEST 46 200 PM  
AVERAGE 64  
   
......................................................
 
 
 
THE ROCKFORD IL CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 73 1913  
MINIMUM TEMPERATURE (F) 28 -2 1895  
 
 
SUNRISE AND SUNSET  
NOVEMBER 21 2017......SUNRISE 654 AM CST SUNSET 430 PM CST  
NOVEMBER 22 2017......SUNRISE 656 AM CST SUNSET 429 PM CST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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